Web roll supporting and controlling mechanism



Dec. 28, 1943. R A WILLIAMS 2,337,790

WEB ROLL SUPPORTING AND CONTROLLING MECHANISM Filed Aug. 9, 1941 a 16 kid 15 gm, gab O 16 Patent Dec 28, 1943 2,337,790

UNITED STATES PATENT OFFICE WEB ROLL SUPPORTING AND CONTROLLING MECHANISM Robert Alonzo Williams, Chicago, 111., assignor to Ditto, Incorporated, Chicago, 111., a corporation of West Virginia Application August 9, 1941, Serial No. 406,210

6 Claims. (Cl. 24268) This invention relates to means for supporting larged scale showing the shaft supporting means and controlling web rolls, and it has for its obat one side of the machine. ject the provision of a new and improved form Fig. 3 is a vertical sectional view on an enlarged and arrangement of parts by which a roll can be scale taken substantially at the line 3-3 of Fig. 1. very quickly and easily placed in operative posi- Fig. 4 is a horizontal sectional view on an entlon in a machine and by which a frictional conlarged scale taken substantially at the line 4-4 trol of the roll shall-be established so as to preof Fig. l; and n vent over-running of the roll when a short length Fig. 5 is a horizontal sectional view taken subof the web is drawn from the roll by a pull on the stantially at the line 5-5 of Fig. 2 but with the web. The invention is designed particularly for bracket l5 and shaft l4 omitted for clearance of use in a machine of the type disclosed by my prior illustration.

Letters Patent No. 2,238,356, of April 15, 1941, in Referring now to the several figures of the which a comparatively large number of webs are drawing, in which corresponding parts are indiemployed, with the rolls arranged in fairly close cated by the same reference characters, Ill and II proximity to each other.- l5 indicate standards formed of sheet metal at 0p- In the preferred form of the invention, a web posite sides of the machine, the standard ll beroll is supported on a shaft between two pr ing provided with a socket member l2 adapted to plates by Which a frictional grip is applied on receive the end portion of a shaft l3 therein, as is the faces of the roll, one of the plates being held b t h wn in Fig. 4. ri idly in po n y means of a Set-Screw which At the opposite side of the machine, the stand- Can readily be loosened for the app 0f ard I0 is provided with a curved bearing plate I new Web roll, and the oth r pl e being pp r in the form of a channel into which the end pory din y in p sit y means of a heavy coiled tion of the shaft may be lowered from above for p The Preferred ns for holding. the effective engagement therewith, the bearing plate roll-supporting shaft non-rotatably in position It being formed on the upper end of a bracket l5 so as to e c p f being q y and easily secured .by bolts It to said standard. This hearapplied in position and q y a d easily reing plate I4 is at the same level as that of the moved when desired comprises a socket at one k t n, so as t support th shaft la i horiside of the machine into which one end portion zontal position. As is best shown in Fig. 2, the of the shaft may be moved lon tudi al y f bearing plate It is spaced from the face of the support and a bearing at the opposite side of the standard In so as to provide room for two heavy machine into which the opposite end po tion o plates l1 and I8 secured to the standard inspaced the shaft may be lowered from above for effective relation to each other, being rigidly mounted in engagement therewith, with a locking plate position by means of machine screws I9. At the adapted in Op ra ve po i on to hold the shaft side face ,of the plate l8, a keeper IS in the form rigidly in position in the bearing so as to be no'nof an angle is secured by means of machinerotatable therein, and adapted by an easily-efscrews 20, with the flange portion 2| of the keepfected adjustment to quickly moved t t er wide enough to extend substantially across th native position where it permits the shaft to be space between the Plates and lifted freely out of position. It is one of the In the slideway provided by the plates l1 and gents of the invention to provide an improved l8 and the keeper l9 a locking plate 22 is slldarrangement by which the position of the lockably mounted or such width as to engage the mg plate can be controlled to advantage so as to ner face of the flange 2| at the upper end of the be operable readily by one hand. P plate, and of such reduced width atits lower end It is another object of this invention to ima as g fi f i zg with the en ace 0 e s a t or holding the shaft fi fn f-it-zngemezitg of this glpe i l e f i g :22:: against longitudinal movement and thus preventa 1 e 011 e p ing withdrawal of the shaft from the socket l2.

by which the several objects have been attained is best shown in Fig 2 where portion of are illustrated in the accompanyi drawing. in on shaft I3 is broken away at the left-hand end, the which locking plate 22 at its lower end engages a groove i 1 is a r v e vertical sectional view, 2: m the top face of the shaft l3 so as to hold the thr an m imen of the Preferred form of shaft securely against rotary movement about its the invention. axis. It will be appreciated that with the lock- Fig. 2 is a side face view on a considerably ening plate 22 in operative holding position as a spring 28 thereon adapted normally to hold,

the bar swung to the limit of its movement toward the left in Fig. 2. In its effective latching position as shown in Fig. 2, the upper end face of the bar engages a pin 21 carried by the plate I! so as to be eflective for preventing upward movement of the latch bar and the locking plate 22-upon which it is mounted. The bar 24 is provided with a pin 28 serving as a handle for moving the b r and the connected plate. In its edge, the bar 4 is provided with a notch 29 adapted by engagement with the pin 21 to hold the bar 24 and the attached plate 22 in raised I position.

With the parts in the positions as illustrated in Fig. 2, whenever the operator desires to remove the shaft from its mountings, he swings the bar 24 toward the right so as to clear the pin 21, after which he raises the bar and attached plate 22, preferably bringing the notch 29 into engagement with said pin 21 for holding the parts in raised position. With the locking plate 22 thus retracted upwardly, the operator is able to lift the shaft I3 and to move it slightly toward the left in Fig. 1 for disengagement of the end portion of the shaft from the socket l2, thus freeing the shaft completely from the supports. When it is desired that the shaft be replaced, the end of the shaft at the right in Fig. 1 is inserted again into the socket i2, after which the opposite end can be positioned readily on the curved supporting plate ii. The pin 28 is then pressed toward the right in Fig. 2 for disengaging the notch 29 from the pin 21, after which the locking plate is moved downwardly again to its operative locking position, with one portion of the lower end of the locking plate engaging the end of the shaft and another portion engagwith the roll. The shaft is first removed from its supporting means, after which the plate II is removed from the shaft so as-to permit a fresh roll to be placed in position next to the plate 22. The plate Si is then secured again in the same position as that at which it had before been mounted, so as to cause the frictional braking eflect of the plates 3| and 33 on the interposed web roll to be substantially the same for the new roll as for the former roll.

With the shaft it held rigidly in position in the framework, and with the roll 30 held by a frictional grip thereon against free rotary movement with respect to the shaft. the arrangement is such that when the web is drawn off the roll the drag of the gripping plates on the roll prevents any over-running of the roll. The web is thus kept taut between the roll and the means by which a pull is applied on the web, even in cases where the web is drawn off by power applied. intermittently.

It has been found in practice that the arrangement shown and described is very satisfactory and is highly successful in use, both with respect to the mounting of the roll in the machine and with respect to the control of the web in operation.

While the form and arrangement of parts as shown and described are preferred, the invention is not to be limited to such construction except so far as the claims may be so limited, it being understood that changes might well be made in the construction without departing from the invention.

I claim:

1. In a web roll control mechanism, the combination of two supports in spaced relation to each other, a shaft movable longitudinally into ing the groove 23 so as to hold the shaft rigidly in position. Inasmuch as the latch bar -Zl'can be readily manipulated for either the latching or the unlatching operation, it will be appreciated that the shaft can be very easily removedand then again replaced in operative position.

The meansfor holding a web roll 30 in position on the shaft t3 and for applying the required frictional grip on the roll for controlling the unrolling, operation comprises a pressure plate 2| in the form of a large disc releasably mounted in fixed position on said shaft by means of a setscrew 32 so as to engage one face of the web roll. At the opposite end of the roll 30, a second pressure plate 23 also in the form of a disc is slidably mounted on said shaft so as to be held against rotation thereby, said second pressure plate being ressed yieldingly toward said first named pressure plate by a coiled spring 24 mounted on the shaft between said second pressure plate and a collar 35 secured in adjusted position on the shaft by means of a set-screw 26.

With the collar 25 in the desired adjusted position, and with the point at which the plate II is to be secured effectively marked on the shaft, it is an easy matter to apply a fresh roll effectively at the desired point so as to insure proper frictional engagement of the mounting means position to be supported at one end from one of said supports, a bearing member carried by the support at the opposite side of the machine into which the opposite end portion of the shaft may be lowered from above for effective engagement therewith. two heavy plates mounted in spaced relation to each other on said last-mentioned support, a keeper carried by one of said heavy plates having a portion extending opposite to the space between said two plates so as to provide a vertically disposed slideway, and a locking plate slidably mounted in said slideway adapted by'engagement with said shaft to hold the shaft idly in p sition.

2. In a web roll control mechanism, the combination of two supports in spaced relation to each other, a shaft movable longitudinally into position to be supported at one end from one of said supports, a bearing member carried by the support at the opposite side of the machine into which the opposite end portion of the shaft may be lowered from above for effective engagement therewith, two heavy plates mounted in spaced relation to each other on said last-mentioned support, a keeper carried by one of said heavy plates having a portion extending opposite to the space between said two plates so as to provide a vertically disposed slideway, a locking plate slidable vertically'in said slideway adapted when in lowered position in the slideway to enga e said shaft so as to hold it rigidly in position, and readily-releasable mean adapted normally to hold said locking plate in its lowered holding position.

3. In a web roll control mechanism, the combination of two supports in spaced relation to each other, a shaft movable longitudinally into position to be supported at one end from one of said supports, a bearing member carried by the support at the opposite side of the machine into which the opposite end portion of the shaft may be lowered from above for effective engagement therewith, two heavy plates mounted in spaced relationto each other on said last-mentioned support, a keeper carried by one of said heavy plates having a portion extending opposite to the space between said two plates so as to provide a vertically disposed slideway, a locking, plate slidable vertically in said slideway adapted when in lowered position in the slideway to engage said shaft so as to hold it rigidly in position, and

support at the opposite side of the machine into which the opposite end portion of the shaft may be lowered from above for effective engagement therewith, two heavy plates moimted in spaced relation to each other on said last-mentioned support, a keeper carried by one of said heavy plates having a portion extending opposite to the space between said two plates so as to provide a vertically disposed slideway, a locking plate slidable vertically in said slideway adapted when in lowered position in the slideway to engage said shaft so as to hold it rigidly in position, an a latch member pivotally mounted on said locking plate adapted by engagement with a pin carried by one of said spaced plates to hold said locking plate normally pressing said latch member into holding position. a

5. In a web roll control mechanism, the combination of two supports in spaced relation to each other, a shaft movable longitudinally into position to be supported at one end from one of said supports, a bearing member carried by the support at the opposite side of the machine into which the opposite end portion of the shaft may be lowered from above for efiective engageing plate slidable vertically in said slideway adapted when in lowered position in the slideway to engage said shaft so as to hold it rigidly in position, and a latch member pivotally mounted on said locking plate adapted by engagement with a fixed bearing on said slideway to hold said locking plate normally in its lowered holding position and adapted by engagement of a notch in its face with a portion of said slideway to hold said locking plate normally in its raised position.

6. In a web roll control mechanism, the combination of two supports in spaced relation to each other, a shaft movable longitudinally into position to be supported at one end from one of said supports, a bearing member carried by the support. at th opposite side of the machine into which the opposite end portion of the shaft may be lowered from above for effective engagement therewith, a locking member slidably mounted in position above said bearing member in the form of a bar having a notch in its lower end adapted by engagement with said shaft to hold the shaft against longitudinal movement and adapted by engagement with an opening in the face of the shaft to hold the shaft against either vertical movement or rotary movement, and a latch member movably mounted on said locking tion.

ROBERT ALONZO WILLIAMS. 

